I had spinal meningitis and a fever of 105 which put me in a coma for 5 weeks. When I woke in the hospital I was confused and scared but I also had a constant ringing in my ears. That was almost 30 years ago. My doctors said it was tinnitus and there was no cure. The sound is a constant buzzing in my left ear but it never seams to get louder or quieter and I've learned to accept it.